Sinapis arvensis L.
corn mustard (charlock; wild mustard)
Brassicaceae (Mustard family)

Introduction to Vascular Plants


© Kevin Newell     (Photo ID #2701)


E-Flora BC Static Map

Distribution of Sinapis arvensis
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Species Information

Annual herb from a taproot; stems 30-100 cm tall, simple to freely branched, hairy with awl-like or bristlelike hairs throughout or just on lower stem.
Basal leaves variable, from simple and wavy-margined and toothed to pinnately cleft with the terminal lobe the largest, 5-15 cm long; upper stem leaves simple.
In compound terminal clusters, to 30 cm long, flower stalks stout, 2-6 mm long, erect or ascending; petals yellow, 8-14 mm long; sepals 4-5 mm long.
Siliques, glabrous or somewhat hairy, straight or slightly curved, (3) 4-5 cm long, 2 mm wide, often constricted between seeds; styles beaked, conspicuously flattened, about 2 mm long; seeds 7-12, about 2 mm long, finely honeycombed.

SourceThe Illustrated Flora of British Columbia


If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.

Habitat and Range

Mesic to dry field and waste places in the lowland and steppe zones; rare in SW and SC BC; introduced from Eurasia.

SourceThe Illustrated Flora of British Columbia


Synonyms and Alternate Names:
Brassica kaber (D.C.) L.C. Wheeler)